Morissette’s voice is still jagged and true

Alanis Morissette slipped on the musical equivalent of a decade-old prom dress Wednesday and guess what? All in all, it’s a classic that still fits remarkably well.

The outfit she dusted off is, of course, “Jagged Little Pill,” her watershed 1995 album that has sold nearly 15 million copies in the U.S., behind only Shania Twain’s “Come On Over” among the bestselling albums of the SoundScan era.

The reason it rarely felt like a cultural time capsule had less to do with her new acoustic reinterpretation than the fact that the venting of sadness and fury over busted relationships will never go out of style as long as people live and try to love.

She brought her small-scale “JLP Acoustic” tour to the tony environs of Walt Disney Concert Hall, complete with a homey set consisting of three sofas, a wing chair with a stuffed teddy bear and several Persian rugs on which she did her signature back-and-forth rock at the mike while exorcising demons of romantic disillusionment.

Her hit “You Oughta Know” gave the ‘90s generation a rallying cry -- “It’s not fair!” -- that resonated far beyond the Canadian singer-songwriter’s immediate subject: a lover who’d just been ignominiously dumped. It expressed every twinge of rage at universal injustice that erupts at the onset of adulthood.

She didn’t play “Jagged” in sequence but interspersed its songs with selections from subsequent albums showing that in the ensuing decade she’s grown a bit wiser, a bit mellower, even a bit more empathetic to the foibles of the opposite sex.

Still, her fiance, Canadian actor Ryan Reynolds, would be smart to set a wedding date soon. This is one woman who should never be given even the remotest notion of ever being dumped again.

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Alanis Morissette

Where: Orange County Performing Arts Center, Segerstrom Hall, 600 Town Center Drive, Costa Mesa

When: 8 p.m. Sunday

Price: $54.50 to $69.50

Contact: (714) 556-2787